I can perceive you can perceive she can perceive we can perceive you can perceive they can perceive
Forma con V-ing
I can be perceiving you can be perceiving she can be perceiving we can be perceiving you can be perceiving they can be perceiving
Perfetto
I can have perceived you can have perceived she can have perceived we can have perceived you can have perceived they can have perceived
Perfetto con V-ing
I can have been perceiving you can have been perceiving she can have been perceiving we can have been perceiving you can have been perceiving they can have been perceiving
Negazione
Forma semplice
I cannot perceive you cannot perceive she cannot perceive we cannot perceive you cannot perceive they cannot perceive
Forma con V-ing
I cannot be perceiving you cannot be perceiving she cannot be perceiving we cannot be perceiving you cannot be perceiving they cannot be perceiving
Perfetto
I cannot have perceived you cannot have perceived she cannot have perceived we cannot have perceived you cannot have perceived they cannot have perceived
Perfetto con V-ing
I cannot have been perceiving you cannot have been perceiving she cannot have been perceiving we cannot have been perceiving you cannot have been perceiving they cannot have been perceiving
Forma interrogativa
Forma semplice
can I perceive? can you perceive? can she perceive? can we perceive? can you perceive? can they perceive?
Forma con V-ing
can I be perceiving? can you be perceiving? can she be perceiving? can we be perceiving? can you be perceiving? can they be perceiving?
Perfetto
can I have perceived? can you have perceived? can she have perceived? can we have perceived? can you have perceived? can they have perceived?
Perfetto con V-ing
can I have been perceiving? can you have been perceiving? can she have been perceiving? can we have been perceiving? can you have been perceiving? can they have been perceiving?
Forma interro-negativa
Forma semplice
can I not perceive? can you not perceive? can she not perceive? can we not perceive? can you not perceive? can they not perceive?
Forma con V-ing
can I not be perceiving? can you not be perceiving? can she not be perceiving? can we not be perceiving? can you not be perceiving? can they not be perceiving?
Perfetto
can I not have perceived? can you not have perceived? can she not have perceived? can we not have perceived? can you not have perceived? can they not have perceived?
Perfetto con V-ing
can I not have been perceiving? can you not have been perceiving? can she not have been perceiving? can we not have been perceiving? can you not have been perceiving? can they not have been perceiving?